Apple iOS 4 for iPhone 4, iPhone 3G, iPhone 3GS, iPod touch - P
Download iOS 5 GM For iPhone 4, 3GS, iPad 2, iPad 1 And iPod touch | Redmond Pie
Apple's iPhone 4, iPad 2 Probably Won't Support iOS 8
iPhone 4 through the ages: From 'antennagate' to iOS 7 (pictures) - CNET
Hands on iPhone 4 and the iOS 4 (iPhone OS 4) - YouTube
Apple Reminds iPhone 5 Owners to Update to iOS 10.3.4 by November 3 - MacRumors
iOS 8 on the iPhone 4S: Performance isn't the (only) problem | Ars Technica
iPhone 4 through the ages: From 'antennagate' to iOS 7 (pictures) - CNET
Apple iPhone 4 - 16GB - White (Unlocked) A1332 (GSM) (CA) for sale online | eBay
Bring Your iPhone 4 Back Up to Speed with These 6 Easy Tweaks for iOS 7 « iOS & iPhone :: Gadget Hacks
Fluff] My gold iPhone 4 geekgraded to iOS 6.0.1 with loads of games and apps : r/LegacyJailbreak
Just found my iPhone 4 On iOS 6 : r/iphone
question] Recently got my hands on an iPhone 4 running iOS 7.1.2. Should I jailbreak it? Btw it's a 32gb white, I also need to replace the battery. : r/LegacyJailbreak
Should You Upgrade Your iPhone 4 to iOS 7?
iOS 7.1 on the iPhone 4: As good as it's going to get | Ars Technica